CVE-2026-90388

Summary

In the Linux kernel, the following vulnerability has been resolved:

iommu/dma: Check atomic pool allocation result directly

The non-blocking, non-coherent allocation path uses dma_alloc_from_pool(), which returns the allocated page and fills cpu_addr only on success.

Do not rely on cpu_addr to detect allocation failure in this path. Check the returned page directly before using it for the IOMMU mapping.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux9420139f516d7fbc248ce17f35275cb005ed98ea < ac9cd0a669b8be5d178dbd471b0d68039dac58b5affected
LinuxLinux9420139f516d7fbc248ce17f35275cb005ed98ea < db46cb9da83a507d86d2bb080bdb09c865da3d0aaffected
LinuxLinux9420139f516d7fbc248ce17f35275cb005ed98ea < d56c3f955b21e5764c1497e295a5b5d0b3a40470affected
LinuxLinux9420139f516d7fbc248ce17f35275cb005ed98ea < 06dffc96693083dda3412311406e558cf27f1574affected
LinuxLinux9420139f516d7fbc248ce17f35275cb005ed98ea < a4ace31d732b657d774e31fb444c0c27d42c78e5affected
LinuxLinux9420139f516d7fbc248ce17f35275cb005ed98ea < fb0b39287ba894dbdfac2901c51788b63f5c2291affected
LinuxLinux9420139f516d7fbc248ce17f35275cb005ed98ea < 8c486293ddd0af60991408149fc3e964ea888dc4affected
LinuxLinux9420139f516d7fbc248ce17f35275cb005ed98ea < af95a0ebc0a0db0762be75f51eadf770bad01aaaaffected
LinuxLinux47184b9ddf184cc9a77cf441943a0fe9b7afa575affected
LinuxLinux5.8.6 < 5.9affected
LinuxLinux5.9affected
LinuxLinux0 < 5.9unaffected
LinuxLinux5.10.270 <= 5.10.*unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References